Home / 709,472.81-1,063,285.09-288,256.25

Finding the Fourth Proportional to 709,472.81, 1,063,285.09 and 288,256.25

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Solution

The fourth proportional to 709,472.81, 1,063,285.09 and 288,256.25 is: 432,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,472.81 : 1,063,285.09 = 288,256.25 : x
  2. Step 2: Convert to fraction form
    709,472.81/1,063,285.09 = 288,256.25/x
  3. Step 3: Cross multiply
    709,472.81x = 1,063,285.09 × 288,256.25
  4. Step 4: Simplify right side
    709,472.81x = 306,498,572,724.31
  5. Step 5: Solve for x
    x = 306,498,572,724.31/709,472.81
  6. Step 6: Final answer
    x = 432,008.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.